Why im getting single verts when separate selected
You've applied the modifier, so now you have one object, and inside this object you have several meshes that compose your different small cabins.

If each of your cabin is made of one mesh, in Edit mode, select all and separate with P > By Loose Parts and you will have 12 different objects.

If each of your cabin is made of several meshes,  in Edit mode, select each object and P > Selection.